:root{--color-primary: #1a73e8;--color-primary-hover: #1557b0;--color-secondary: #5f6368;--color-secondary-hover: #3c4043;--color-accent: #00c853;--color-warning: #f9a825;--color-danger: #d32f2f;--color-vix: #d32f2f;--color-vix-up: #d32f2f;--color-vix-down: #00c853;--color-variance-near: #ff7043;--color-variance-next: #7e57c2;--bg-primary: #ffffff;--bg-secondary: #f8f9fa;--bg-tertiary: #e8eaed;--bg-dark: #1a1a2e;--bg-card: #ffffff;--text-primary: #202124;--text-secondary: #5f6368;--text-muted: #9aa0a6;--text-light: #ffffff;--border-color: #dadce0;--border-color-light: #e8eaed;--border-color-focus: var(--color-primary);--shadow-sm: 0 1px 2px rgba(0, 0, 0, .1);--shadow-md: 0 4px 6px rgba(0, 0, 0, .1);--shadow-lg: 0 10px 20px rgba(0, 0, 0, .15);--shadow-card: 0 2px 8px rgba(0, 0, 0, .08);--spacing-xs: .25rem;--spacing-sm: .5rem;--spacing-md: 1rem;--spacing-lg: 1.5rem;--spacing-xl: 2rem;--spacing-xxl: 3rem;--radius-sm: 4px;--radius-md: 8px;--radius-lg: 12px;--radius-full: 9999px;--font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Oxygen, Ubuntu, Cantarell, sans-serif;--font-mono: "SF Mono", "Fira Code", "Consolas", monospace;--font-size-xs: .75rem;--font-size-sm: .875rem;--font-size-base: 1rem;--font-size-lg: 1.125rem;--font-size-xl: 1.25rem;--font-size-2xl: 1.5rem;--font-size-3xl: 2rem;--font-size-4xl: 3rem;--nav-height: 64px;--footer-height: 60px;--sidebar-width: 280px;--container-max-width: 1400px;--transition-fast: .15s ease;--transition-base: .25s ease;--transition-slow: .4s ease;--z-base: 1;--z-dropdown: 100;--z-sticky: 200;--z-modal: 500;--z-tooltip: 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h1{font-size:var(--font-size-xl);font-weight:600;letter-spacing:-.5px}.nav-links{display:flex;list-style:none;gap:var(--spacing-sm)}.nav-link{display:inline-flex;align-items:center;padding:var(--spacing-sm) var(--spacing-md);color:var(--text-light);opacity:.8;border-radius:var(--radius-md);transition:all var(--transition-fast)}.nav-link:hover{opacity:1;background-color:#ffffff1a;text-decoration:none}.nav-link.active{opacity:1;background-color:#ffffff26;font-weight:500}#content{flex:1;padding:var(--spacing-xl);max-width:var(--container-max-width);width:100%;margin:0 auto}.page{display:none;animation:fadeIn var(--transition-base) ease-out}.page.active{display:block}@keyframes fadeIn{0%{opacity:0;transform:translateY(8px)}to{opacity:1;transform:translateY(0)}}.page-header{margin-bottom:var(--spacing-xl)}.page-header h2{font-size:var(--font-size-2xl);font-weight:600;color:var(--text-primary);margin-bottom:var(--spacing-xs)}.page-header .subtitle{color:var(--text-secondary);font-size:var(--font-size-base)}.vix-value-container{display:flex;flex-wrap:wrap;gap:var(--spacing-xl);align-items:center;background:var(--bg-card);padding:var(--spacing-xl);border-radius:var(--radius-lg);box-shadow:var(--shadow-card);margin-bottom:var(--spacing-xl)}.vix-current{display:flex;flex-direction:column;align-items:flex-start}.vix-current .label{font-size:var(--font-size-sm);font-weight:600;color:var(--text-secondary);text-transform:uppercase;letter-spacing:1px}.vix-current .value{font-size:var(--font-size-4xl);font-weight:700;font-family:var(--font-mono);color:var(--color-vix);line-height:1.2}.vix-stats{display:flex;gap:var(--spacing-xl);flex-wrap:wrap}.vix-info{flex:1;min-width:200px;color:var(--text-secondary);font-size:var(--font-size-sm);line-height:1.5}.vix-info 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var(--transition-fast);white-space:nowrap}.btn:disabled{opacity:.5;cursor:not-allowed}.btn-primary{background-color:var(--color-primary);color:var(--text-light)}.btn-primary:hover:not(:disabled){background-color:var(--color-primary-hover)}.btn-secondary{background-color:var(--color-secondary);color:var(--text-light)}.btn-secondary:hover:not(:disabled){background-color:var(--color-secondary-hover)}.btn-outline{background-color:transparent;border-color:var(--border-color);color:var(--text-primary)}.btn-outline:hover:not(:disabled){background-color:var(--bg-tertiary);border-color:var(--text-secondary)}.btn-danger{background-color:var(--color-danger);color:var(--text-light)}.btn-danger:hover:not(:disabled){background-color:#b71c1c}.computation-container{display:grid;grid-template-columns:repeat(auto-fit,minmax(300px,1fr));gap:var(--spacing-xl);margin-bottom:var(--spacing-xl)}.computation-section{background:var(--bg-card);padding:var(--spacing-lg);border-radius:var(--radius-lg);box-shadow:var(--shadow-card)}.computation-section h3{font-size:var(--font-size-lg);font-weight:600;color:var(--text-primary);margin-bottom:var(--spacing-md);padding-bottom:var(--spacing-sm);border-bottom:2px solid var(--bg-tertiary)}.computation-details{font-family:var(--font-mono);font-size:var(--font-size-sm);color:var(--text-secondary);line-height:1.8}.computation-details .step{display:flex;justify-content:space-between;padding:var(--spacing-xs) 0;border-bottom:1px solid var(--border-color-light)}.computation-details .step:last-child{border-bottom:none}.computation-details .step-label{color:var(--text-secondary)}.computation-details .step-value{color:var(--text-primary);font-weight:500}.computation-details .step-value.highlight{color:var(--color-vix);font-weight:700}.diagram-container{background:var(--bg-card);border-radius:var(--radius-lg);padding:var(--spacing-xl);margin-bottom:var(--spacing-xl);box-shadow:var(--shadow-card)}.diagram-header{text-align:center;margin-bottom:var(--spacing-xl)}.diagram-header h3{font-size:var(--font-size-xl);font-weight:600;color:var(--text-primary);margin:0}.diagram-subtitle{color:var(--text-muted);font-size:var(--font-size-sm);margin-top:var(--spacing-xs)}.diagram-flow{display:flex;flex-direction:column;align-items:center;gap:var(--spacing-sm)}.diagram-node{background:var(--bg-secondary);border:2px solid var(--border-color);border-radius:var(--radius-md);padding:var(--spacing-md) var(--spacing-lg);text-align:center;min-width:160px;transition:all .2s ease}.diagram-node:hover{border-color:var(--color-primary);transform:translateY(-2px)}.diagram-node.highlight{border-color:var(--color-vix);background:#d32f2f1a;box-shadow:0 0 15px 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